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Heading Alignment Cone
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Heading Alignment Cylinder
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Heading Alignment Center
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Heading Alignment Circle
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Similar to HAC
A&A - Advertise and Award
A&E - Architectural and Engineering
A&E - Architects and Engineering
A&I - Assembly and Installation
A&L - Approach and Landing
A&P - Attitude and Pointing
A&PS - Administration and Program Support
MSFC Directorate
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